Inking device for duplicating-machines



:NKiNb DEVICE FOR DUPLICATING MACHINES.

A FLiCAHON men AUG.I4.1920.

1,387,764. Patented Aug. 16, 1921.

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mum DEVICE FOR DUPLICATING MACHINES.

MYLlCk'lOH FILED AUG.I4. 1920.

Patented Aug. 16, 1921.

2 SHEETS-SHEET 2- Snow 06oz STATES PATENT orrice.

WALTER GHIPPERFIELD, OF EOBNCHURCH, ENG-LAND, ASSIGNOB TO A. B. DICKCOH'PANY, OF CHICAGO, ILLINOIS,

A CORPORATION OF ILLINOIS.

HIKING- DEVICE FOR DUPLICATING-MACHINES.

memes.

Application filed August 14,

To all whom it may concern:

Be it known that I, TALTER Cnirrnnrmnn, a subject of the King of GreatBritain, residing at Kinkora, Great Nelmes, Hornchurch, Essex, England,have invented certain new and useful Improvements in Inking Devices forDuplicating-Machines, of which the following is a specification.

My invention relates to improvements in the construction of inkingdevices for use with rotary duplicating machines. Means for inking thecylinder, upon which is attached the stencil sheet, have hitherto beenconstructed in which an open metal tray resting upon a platform wasemployed, the tray containing an inking roller and suitable scrapersplaced on either side of the roller to remove superfluous ink. In suchconstructions the platform is spring controlled, so that the inkingroller may cause the ink to be distributed over the surface of thecylinder, and then removed into an inoperative position until it isagain required to apply ink to the cylinder. W'ith such an inkingdevice, if the tray receives too much ink, the jerkvoccasioned bybringing the tray and ink roller therein up to operative positionsometimes causes the ink to splash out of the tray, and spilling of theink is also likely to be caused when the machine is moved from oneposition to another. With an open tray there is likewise the disad-'vantage that dirt is likely to collect therein.

In accordance with my present invention, the ink tray or container andparts operable therewith are so constructed that the ink cannot be upsetor spilled regardless of whether the container is in the operative orinoperative position. i obtain this result preferably by constructingthe ink container in two parts which are secured together, one of theseparts consisting of a cover member having a slot therein. Theinkingroller is carried within the container and so mounted that aportion of its circumference extends through the slotand makes contactwith the periphery of an ink distributing roller when the container isbrought into its operative position. When the ink container is movedinto its inoperative position, in which the inking roller moves out ofengagement with the ink distributing roller, spring means are enabled topress the inking roller firmly into engagement with suitably shapededges of the slot in the cover member, so as to seal Specification ofLetters Patent.

Patented Aug. 16, 1921.

1920. Serial No. 403,446.

the container and prevent escape of ink therefrom as well as preventingthe entrance of dirt or dust into the container.

In order that a clearer understanding of my invention may be had,attention is hereby directed to the accompanying drawings forming partof this application and illustrating certain embodiments of myinvention. In the drawings Figure 1 represents a partial verticalsection through the drum of a rotary duplicating machine with one formof my improved inking device mounted therein in operative position; Fig.2 is a similar view with the inking device in inoperative position; Fig.3 represents a side elevation of a modified form of inking device; andFig. 4 represents a top plan view of the form of inking device shown inFig. 3. Y

Referring to the drawings, the reference character 1 represents aportion of the perforated surface of the printing cylinder of a rotaryduplicating machine, to which is usually applied a pad whereon a stencilis stretched and secured. The ink distributing roller 2 is mounted on aspindle 3 which may be carried in bearings formed inthe arms 4. Thesearms are shown as pivoted on a shaft- 5, and spring means are employedfor maintaining the roller 2 in contact with the surface of cylinder 1.

The inking device is shown as constructed in twoparts, the lower part 6being preferably dish shaped while the upper part or cover 7 preferablyhas. the. form of something like the letter M. The cover has a slot 8which should be of a length substantially equal to that of the inkingroller 9. The latter is carried on a spindle 1O supported by arms 11secured on spindle 12 mounted in the cover 7. -A pin 13 extends throughthe free ends of arms 11, spring 14 being secured at one end to pin 13and at the other end to a stud 15 attached to cover 7.

Cover 7 is provided with lugs 16 through which an opening extends, sothat the container may be pivotally connected thereby to shaft 5 Thelatter may be supported by arms 17 secured on the fixed printingcylinder shaft 18. Springs 5 may be secured to the tails of arms -l andto arms 17 to hold the distributing roller 2 in contact with the surfaceof cylinder 1, or springs may be otherwise mounted to hold roller 2 incontact with cylinder 1.

flanges ill. 19, and between these flanges may be inserted a packing ofrubber or other upper portion or cover i is provided with the slot 8,the corer being secured to the lower portion of the container,preferably by screws, as in the form of device previously described. c

i The portion tr of the container carries a spindle 12 on which arepivoted arms 11 carrying the roller 9 on spindle 10 Stud 15 is securedto a lug on the interior surface of member if, and has secured theretoone end of spring 1 the other end of the spring being secured to pin 13which is carried by the free ends of arms 11. Suitable ink filling meansare provided by the openings which are normally closed by plugs 22 on aflange of member 6 of the container. The cover member 7 has securedthereto the scrapers 21, the ends of which contact with the periphery ofthe inking roller Elton each side of the latter to remove superfluousink therefrom.

The arrangement is such that when the container in either formillustrated is brought into its operative position, it is in a more orless horizontal plane, as shown in Figs. 1 and 3, the container pivotingupon spindle 5 in the first form of device described and upon a suitablypositioned spindle, similar to the spindle 5 in the second form ofdevice described. When so p01 sitioned the inking roller 9 or 9 isbrought into contact with the ink distributing roller 2, which latter isin engagement with drum 1. This engagement depresses the inking rollersomewhat, thereby 'tensioning the spring 14 or 14, the inking rollerswinging clear of the edges of the slot 8 or 8*, which edges arepreferably formed with concave surfaces having the same curvature as theperiphery of the inking roller; The inking roller is rotated by itsengagement with the distributing roller 2 which in turn is rotated byengagement with cylinder 1. The rotation of the ink roller carries inkfrom the supply thereoi carried by member 6 or 6 to the distributingroller 2 from which the ink is distributed over the printed surface 1.

When suflicient ink has been supplied to moved downwardly into itsinoperative position shown in Fig. 2, in which it assumes an angle whichmay be one of approximately l5. Any usual means may be provided forholding the ink container in its operative and. inoperative positions,and accordingly i have not illustrated the same.

When the container and inking roller more downwardly, contact of theinking roller with the distributing roller is broken, and the spring 1%or 14: pulls ar as 11 or 11 upwardly so as to cause the inking roller torise to bring its periphery into engage ment with the edges of the slot-8 or 8*, whereby the opening in the container is sealed. When thecontainer is in its inoperative position, the ink therein flows into theright hand and or" the container, referring to Fig. 2, so that theinking roller is then out of engagement with the ink.

Any suitable means may be utilized for raising" and lowering thecontainer and for holding the same in either position for requiredperiods. It should be understood that my invention is not limited to thedetails of construction described, but is as broad as is indicated bythe accompanying claims.

What I claim is:

l in arotary duplicating machine, the combination of an ink containerhaving a slot therethrough, an ink roller within said container andadapted to extend partly through said slot, and springmeans mount ed topress said roller. toward said slot, said roller being adapted to closesaid slot when pressed into contact with the edges thereof.

2. in a rotary duplicating machine, the combination of an ink containernormally closed except for a slot extending through a surface thereof,an ink roller mounted for rotation in said container and adapted toextend partly through said slot, and spring means to'press said rollertoward said slot, said roller being adapted to close said slot whenpressed into contact with the edges thereof, and said container beingadapted to be pivotally mounted.

3, In a rotary duplicating machine, the combination of an ink containerhaving bottom and cover portions secured together, said cover portionhaving a slot therethrough, arms pivoted within said container, an inkroller rotatably mounted between said arms, and adapted to extend partlythrough said slot, and spring means acting on said arms to press saidroller toward said slot, said roller being adapted to close said slotwhen pressed into contact with the edgesthereof.

4. in a rotary duplicating machine, the combination of a rotary drum, astationary support therein, an ink distributing roller supported thereonto frictionally engage the inner-surface of said drum, an ink containermounted on said support for movement into and out of operativepositions, said container having a slot therethrongh, an inking rollerin said container, adapted to extend partly through said slot, andspring means tending to press said roiier toward said slot,

' said roiler bein ada ted to ciose said slot when pressed into contactwith the edges thereof, and said container being so positioned as tocause engagement between said distributing and inking rollers when saidcontainer is moved into operative position.

5. In a rotary duplicating machine, the combination of a rotary drum, astationary support therein, an ink distributing roller supported thereonto trictionaily engage the inner surface of said drum, an ink containerpivotally mounted on said support, said container having a base and acover having a slot therethrough, an inking roller in said container,adapted to extend partiy through said slot, and spring means tending topress said roller toward said siot, said roller being adapted to closesaid slot when pressed into contact with the edges thereof, saidcontainer being movable into an operative position in which saiddistributing roller engages said inking roller to press the sameinwardly of the container, to a slight extent, and to an inoperativeposition away from said distributing roller.

6. In a rotary duplicating machine, the combination of an ink containerhaving bottom and cover portions secured together, said cover portionhaving an approximately Wt shape with a slot extending through thedepressed central portion thereof, a pivoted arm in said container, anink roller carried thereby, and adapted to extend partly through saidslot, and spring means acting on said arm to press said roller towardsaid slot, said roller being adapted to close said slot when pressedinto contact with the edges thereof, said container having meansadjacent one edge whereby the same may be pivotaily mounted.

This specification signed and witnessed this28th day of July, 1920.

WALTER ornrrnnrmrn.

